Grain-drill.



No. 659,227. Patented 0a. 9, I900. a. n. HAWORTH.

GRAIN DRILL.

(Application filed July 19- 19001) (No mun.) w

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GEORGE DI HAWORTH,

ATENT FFICE;

OF CHICAGO, ILLINOIS.

GRAlN -DRlLL.

SPECIFICATION forming part of Letters Patent N 0. 659,227, dated October9, 1900.

Application filed J ly 19, 1900.

T0 (ZZZ whom it may concern:

Be it known that I, GEORGE D. HAWORTH, of the city of Chicago, State ofIllinois, have invented certain new and useful Improvements inGrain-Drills, of which the following is a specification.

This invention relates to means for lifting and yieldingly depressingthe runners or furrow-openers of grain-drills and similar implements. Itis exemplified in the structure hereinafter described and it is definedin the appended claims.

In the drawings forming part of this specification, Figure l is a sideelevation of an embodiment of my invention, showing the runnerssupported at about the level of the ground. Fig. 2 is a similarelevation showing the runners forced yieldingly into the soil. Fig. 3 isa rear elevation of one of the brackets used to connect the draft-barsof the runners with the front cross-bar of the drillframe.

The bracket 1 has pivot-pins I on which the draft-bars swing, anddepending-fingers 1 which hold the bars on the pins while the bars arein operative posit-ions. The fingers are far enough from the pins topermit the bars to be slipped onto the pins narrowwise, and when thebars are in operative positions the upper ends of the bars extend behindthe fingers and hold the bars in connection with the bracket. Centrallugs 1 provide means for connecting springs with the bracket.

The draft-bars 2 are pivoted at their upper ends on the pins of thebracket or are otherwise pivotally connected with the drill-frame, andtheir lower ends embrace and are secured to the front end of thefurrow-opening runner or shoe 3. A bent lever 4. is pivotally con nectedwith the draft-bars at 5 and it extends upward and backward toward theseed-tube 10 of the runner. A stop is provided to prevent upward swingof lever 4 on pivot 5 beyond a certain limit, and in this instance suchstop consists of a pin 6, inserted through a hole in the lever inposition to strike against the draft-bars when the lever has reached thelimit of its upward independent swing. The rear end of the lever ispreferably forked to straddle the seed-tube, so that the lever maySerial No. 24.130- (No model.)

be held by thetube in line with the runner and side wabble be avoided.The pivot 5 of lever 4 is near the lower ends of the draftbars. In thisinstance the lever extends upward and approaches the pivot of thedraftbars before turning rearward, and a spring 7 connects with theforward extension of the lever and with the lug 1 of the bracket 1. Aplurality of hitch-holes 8 are preferably made in the lever, so that theconnection of the spring with the lever may be shifted and theapplication of spring-tension to the lever be varied.

The runner 3 is raised or lowered by force applied to the lever 4. inthe rear of the fulcrum thereof, and downward pressure on the lever isexerted on'the runner to an extent dependent on the strength of spring7. If the spring were omitted, the lever would swing downward withoutaffecting the furrow-former; but the resistance of the spring to thedownward swing of the lever is transmitted to the runner as downwardpressure thereon. The lift of the furrow-former is independent of thespring, and the point in the swing of the lever at which upward motionis imparted to the runner depends on the location of the stop 6. In Fig.l the stop is shown in contact with the draft-bars and upward stress onthe leveris imparted to the runner through the bars.

The means employed to raise and lower lever 4 are independent of thisinvention; but they preferably comprise a rock-shaft, as 13, a lever 14to rock the shaft-arms l2, fixed on the rock-shaft, and rods or bars 11extending from the arms to levers 4.

I claim 1. The combination with a furrow-former hitched at its forwardend to swing vertically, of a lever pivotally connected with thedraftbar of the furrow-former in the rear of the pivot thereof and aspring to impart down- .ward pressure on the lever to the furrowformer,substantially as described.

2. The combination with a furrow-former hitched at its forward end toswing vertically, of. a lever pivotally connected with the draftbar ofthe furrow-former in the rear of the pivot thereof and anextension-spring hitched to the lever and extended forward therefrom,whereby downward pressure on the lever is yieldingly imparted to thefurrow-former.

'3. The combination with a furrow-former hitched at its front end toswing vertically, of a bent lever pivoted to the draft-bar of thefurrow-former in the rear of the pivot thereof and extended upward andbackward, and an extension-spring hitched to the lever at the rearwardturn thereof and extended forward therefrom.

4. The combination with a furrow-former hitched at its front end toswing vertically, of a lever pivotally connected with the d raftbar ofthe furrow-former back of the pivot thereof, a spring to impart downwardpressure on the lever to the furrow-former and a GEO. D. H A\VORTH.

Witnesses:

MARY E. HAWORTH, N. L. FRANK.

